Stocks have bottomed. (Did I say that?) Well, at least it's time to act sensibly on that hunch

Two weeks ago, I ventured a prediction to a colleague, in fun only: The NASDAQ has bottomed. But he wrote it down, demanded that I sign it and plastered it on the office wall. So I guess I'm on the record doing something no one should do--that is, call the market. If Wall Street has taught us anything in the past year, it's that stocks are wholly unpredictable in their behavior. Yet if the "experts" didn't predict the market, what would CNNfN and CNBC have to talk about?

Certainly, it's foolish to invest without some sense of when stock values are...